Volume Buttons Broken

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Hey guys,
So i have a problem with the phone I bought from Ebay. (go figure) Half-way through the day today, my volume up, down, and gzone buttons stoped working. I am not sure why.
At first, I thought it was hardware. I opened up the phone and put in some really old volume buttons form one of my former phones. I could do this because all 3 buttons are on the same ziff connector/cable.The problem was not solved.
Then i thought it was software. I got an app called button savior pro, and it had virtual volume buttons. I tried to use them, and the volume software came up as normal.
I went as far
(General)